Nice one. People seem to be responding to this really well. I'm jelly compared to how hard it is to get eyes and project supporting upvotes on the things I am building and posting updates about. :P
Are you going to publish this on public facing tools site anywhere? My public free hive tools server is just a little vps with some php apps on it and my big server for hivestreams.live is very purpose built for laravel, react and node, and is all tied up in being the rtmp streaming server so its not good for a tools site loading up the ram with big chain pulls either.
But this seems like something you could slap keychain on, ask for a username and spit out pretty PDFs for people without too much effort, and I am sure the community would love it if you did. Github, python and beem and APIs and RPCs and web services, are sort of an advanced class for the typical account holder around here after all, I bet the crowd would love an easy button for this.
Granted it, as you said, is load heavy, but it seems feasible to productize it. People who have big money tax concerns would probably pay a few hive for a pretty printing report too. maybe paywall it to cover the ram and cpu.
Just up from a day sleep after coding on my own projects for like 24 hours straight to solve and rush features out, and drinking coffee and spitballing here about ideas for this very useful tool you made.
RE: Script to create a CSV file with all financial transactions (i.e. for tax purposes)